這篇文章主要介紹了PHP實現Javascript中的escape及unescape函數代碼分享,本文給出兩個實現版本,需要的朋友可以參考下

這個類相當好用.作用么,PHP做JSON傳遞GBK字符,比如中文,日文,韓文神馬的Unicode最合適不過了..

1. <?php 
2. classcoding 
3. { 
4. //模仿JAVASCRIPT的ESCAPE和UNESCAPE函數的功能  
5. functionunescape($str) 
6. { 
7. $text=preg_replace_callback("/%u[0-9A-Za-z]{4}/",array( 
8. &$this, 
9. 'toUtf8' 
10. ),$str); 
11. returnmb_convert_encoding($text,"gb2312","utf-8"); 
12. } 
13.  
14. functiontoUtf8($ar) 
15. { 
16. foreach($aras$val){ 
17. $val=intval(substr($val,2),16); 
18. if($val<0x7F){// 0000-007F  
19. $c.=chr($val); 
20. }elseif($val<0x800){// 0080-0800  
21. $c.=chr(0xC0|($val/64)); 
22. $c.=chr(0x80|($val%64)); 
23. }else{// 0800-FFFF  
24. $c.=chr(0xE0|(($val/64)/64)); 
25. $c.=chr(0x80|(($val/64)%64)); 
26. $c.=chr(0x80|($val%64)); 
27. } 
28. } 
29. return$c; 
30. } 
31.  
32. functionescape($string,$encoding='gb2312') 
33. { 
34. $return=''; 
35. for($x=0;$x<mb_strlen($string,$encoding);$x++){ 
36. $str=mb_substr($string,$x,1,$encoding); 
37. if(strlen($str)>1){// 多字節字符  
38. $return.='%u'.strtoupper(bin2hex(mb_convert_encoding($str,'UCS-2',$encoding))); 
39. }else{ 
40. $return.='%'.strtoupper(bin2hex($str)); 
41. } 
42. } 
43. return$return; 
44. } 
45.  
46. functiongb2utf8($string,$encoding='utf-8',$from_encode='gb2312') 
47. { 
48. returnmb_convert_encoding($string,$encoding,$from_encode); 
49. } 
50.  
51. } 
52. ?> 

google code 上找到的另外一個類似腳本

1. <?php 
2.  
3. functionphpescape($str) 
4. { 
5. $sublen=strlen($str); 
6. $retrunString=""; 
7. for($i=0;$i<$sublen;$i++) 
8. { 
9. if(ord($str[$i])>=127) 
10. { 
11. $tmpString=bin2hex(iconv("gbk","ucs-2",substr($str,$i,2))); 
12. $tmpString=substr($tmpString,2,2).substr($tmpString,0,2); 
13. $retrunString.="%u".$tmpString; 
14. $i++; 
15. }else{ 
16. $retrunString.="%".dechex(ord($str[$i])); 
17. } 
18. } 
19. return$retrunString; 
20. } 
21.  
22.  
23. functionescape($str) 
24. { 
25. preg_match_all("/[/x80-/xff].|[/x01-/x7f]+/",$str,$r); 
26. $ar=$r[0]; 
27. foreach($aras$k=>$v) 
28. { 
29. if(ord($v[0])<128) 
30. $ar[$k]=rawurlencode($v); 
31. else 
32. $ar[$k]="%u".bin2hex(iconv("UTF-8","UCS-2",$v)); 
33. } 
34. returnjoin("",$ar); 
35. } 
36.  
37. functionphpunescape($source) 
38. { 
39. $decodedStr=""; 
40. $pos=0; 
41. $len=strlen($source); 
42.  
43. while($pos<$len) 
44. { 
45. $charAt=substr($source,$pos,1); 
46. if($charAt=='%') 
47. { 
48. $pos++; 
49. $charAt=substr($source,$pos,1); 
50. if($charAt=='u') 
51. { 
52. // we got a unicode character  
53. $pos++; 
54. $unicodeHexVal=substr($source,$pos,4); 
55. $unicode=hexdec($unicodeHexVal); 
56. $entity="&#".$unicode.';'; 
57. $decodedStr.=utf8_encode($entity); 
58. $pos+=4; 
59. }else{ 
60. // we have an escaped ascii character  
61. $hexVal=substr($source,$pos,2); 
62. $decodedStr.=chr(hexdec($hexVal)); 
63. $pos+=2; 
64. } 
65. }else{ 
66. $decodedStr.=$charAt; 
67. $pos++; 
68. } 
69. } 
70. return$decodedStr; 
71. } 
72.  
73.  
74. functionunescape($str) 
75. { 
76. $str=rawurldecode($str); 
77. preg_match_all("/(?:%u.{4})|&#x.{4};|&#/d+;|.+/U",$str,$r); 
78. $ar=$r[0]; 
79. #print_r($ar); 
80. foreach($aras$k=>$v) 
81. { 
82. if(substr($v,0,2)=="%u") 
83. $ar[$k]=iconv("UCS-2","UTF-8",pack("H4",substr($v,-4))); 
84. elseif(substr($v,0,3)=="&#x") 
85. $ar[$k]=iconv("UCS-2","UTF-8",pack("H4",substr($v,3,-1))); 
86. elseif(substr($v,0,2)=="&#") 
87. { 
88. //echo substr($v,2,-1).""; 
89. $ar[$k]=iconv("UCS-2","UTF-8",pack("n",substr($v,2,-1))); 
90. } 
91. } 
92. returnjoin("",$ar); 
93. } 
94.  
95. ?>